<?php defined('SYSPATH') or die('No direct script access.');
/**后台路由规则**/
Route::set('promo_admin', 'promo/admin((/<controller>)(/<action>(/<params>)))', array('params' => '.*'))
    ->defaults(array(
        'controller' => 'promo',
        'action' => 'ad_index',
        'directory'=>'admin'
    ));